Alligare Diquat Herbicide & Algaecide

A fast-acting, non-selective contact herbicide and algaecide for emergent, floating, and submerged weeds. Thorough contact with green plant tissue is important for control.

Recommended for

Submerged weeds, duckweed, and algae in ponds, lakes, drainage ditches, and canals.

Active ingredient

Diquat Dibromide (37.3%).

Product details & application

• Interferes with photosynthesis and can produce visible effects within hours to a few days.
• For best results, use with an appropriate non-ionic surfactant where the label calls for one.
• Apply to actively growing weeds and avoid stirring up bottom sediment during treatment.

Key plants / growth controlled

• Hydrilla
• Water lettuce
• Duckweed
• Water hyacinth
• Salvinia
• Coontail
• Pondweeds
• Bladderwort
• Filamentous algae

Application examples

• Lakeshore 100 ft × 100 ft: 0.46 gal
• Lakeshore 75 ft × 100 ft: 0.34 gal
• Lakeshore 50 ft × 50 ft: 0.12 gal
• 1.0 acre pond: 2.0 gal
• 0.50 acre pond: 1.0 gal
• 0.25 acre pond: 0.50 gal

Water use & safety

The supplied information lists no swimming or fishing restriction and a 5-day irrigation restriction. It also advises keeping people and pets out of treated areas for 24 hours.

Shipping restrictions

Cannot ship to: AK, CA, CT, DE, HI, ME, MD, MA, MI, NH, NJ, NY, OR, RI, VT, WA.

Important: Always refer to the current product label for exact application rates, restrictions, directions, and instructions.